Meaning: 'Offspring' means the young born to a particular animal or species.

Wrong options:

• enemies: 'Enemies' refers to adversaries and does not fit the context of familial relationships in cannibalism.
• describes: 'Describes' is a verb that does not fit as it does not refer to a noun in this context.
• criticism: 'Criticism' is a noun that refers to the expression of disapproval, which does not relate to the context of animals eating their young.
• discover: 'Discover' is a verb that does not fit as it does not refer to a noun in this context.
• practice: 'Practice' is a noun that refers to the act of doing something, which does not fit the list of family members being consumed.

Correct answer: discover

Explanation: The verb 'discover' fits grammatically as it indicates an action that scientists are taking as they learn more about cannibalism. Contextually, it aligns with the idea that new findings are being made about the role of cannibalism in nature.

Meaning: 'Discover' means to find out something previously unknown or to learn about something.

Wrong options:

• enemies: 'Enemies' is a noun that does not fit as it does not relate to the action of learning or finding out.
• describes: 'Describes' is a verb that does not fit the context of scientists learning about cannibalism.
• criticism: 'Criticism' is a noun that does not relate to the action of discovering or learning.
• occurs: 'Occurs' is a verb that indicates something happening, but it does not fit the context of scientists learning about cannibalism.
• practice: 'Practice' is a noun that does not fit as it does not relate to the action of discovering.

Correct answer: practice

Explanation: The term 'practice' fits grammatically as a noun that describes the act of cannibalism among animals. Contextually, it aligns with the discussion of the commonality of this behavior in the animal kingdom.

Meaning: 'Practice' refers to the habitual action or custom of doing something.

Wrong options:

• enemies: 'Enemies' is a noun that does not fit as it does not describe the act of cannibalism.
• describes: 'Describes' is a verb that does not fit as it does not refer to a noun in this context.
• criticism: 'Criticism' is a noun that does not relate to the act of eating one's own kind.
• discover: 'Discover' is a verb that does not fit as it does not refer to a noun in this context.
• occurs: 'Occurs' is a verb that indicates something happening, but it does not describe the act of cannibalism.

Correct answer: occurs

Explanation: The verb 'occurs' fits grammatically as it indicates the action of cannibalism happening across different animal groups. Contextually, it aligns with the statement about the prevalence of cannibalism in the animal kingdom.

Meaning: 'Occurs' means to happen or take place.

Wrong options:

• enemies: 'Enemies' is a noun that does not fit as it does not describe an action related to cannibalism.
• describes: 'Describes' is a verb that does not fit as it does not indicate an occurrence.
• criticism: 'Criticism' is a noun that does not relate to the action of cannibalism happening.
• discover: 'Discover' is a verb that indicates finding out something, but it does not fit the context of cannibalism occurring.
• practice: 'Practice' is a noun that does not fit as it does not indicate an action happening.